This ppa fixed my problems. So it may be related to KMS and DRM. https://edge.launchpad.net/~apw/+archive/red
-- Xorg is unusably slow and flickery https://bugs.launchpad.net/bugs/531590 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
